| Allparts International Limited | Wholesale & retail | 2025 |
| Alma House (Exmouth) Ltd | Households | 2017 |
| Alquiler Limited | Real estate | 2024 |
| Altamira Estate Limited | Households | 2003 |
| Altioris Technologies Limited | Information & communication | 2026 |
| Amazing Floorcare Ltd | Extraterritorial | 1998 |
| AMC Exeter Ltd | Hospitality | 2016 |
| Amor Blinds Ltd | Manufacturing | 2015 |
| Amplus Limited | Financial services | 2013 |
| AMY Darling Aesthetics Ltd | Health & social care | 2025 |
| Anchorline Studio Limited | Professional & scientific | 2026 |
| Andrew Humphries Jewellery Limited | Wholesale & retail | 2015 |
| Andrew Nebbett Designs Group Limited | Manufacturing | 2019 |
| Andrew Nebbett Designs Limited | Manufacturing | 2002 |
| Angel Wings Ltd | Hospitality | 2019 |
| Angela's 16 Ltd | Other services | 2025 |
| Annie & Rich Catering Ltd | Hospitality | 2020 |
| APB Leisure Limited | Hospitality | 2018 |
| Apeiro Ltd | Administrative & support | 2005 |
| Apex Everest Limited | Arts & recreation | 2023 |
| Aqua Spin Southwest Ltd | Arts & recreation | 2018 |
| AR Media Ltd | Information & communication | 2024 |
| Aramis Search UK Ltd | Professional & scientific | 2026 |
| ARC Devon Construction Ltd | Construction | 2014 |
| ARC Logistics Services Ltd | Wholesale & retail | 2025 |
| ARC Real Estate Ltd | Real estate | 2023 |
| Arcadia Garage Limited | Administrative & support | 2018 |
| Arch Consultancy Ltd | Professional & scientific | 2024 |
| Architexe Ltd | Professional & scientific | 2012 |
| Arixen Ltd | Information & communication | 2026 |
| Armfield Project Management Limited | Construction | 1991 |
| Aroma Grill Exmouth Ltd | Hospitality | 2022 |
| Art House Management Company Limited | Households | 2003 |
| Art House Partnership Limited | Real estate | 2025 |
| ARY Barber Ltd | Other services | 2022 |
| ASH Private Hotel Limited | Hospitality | 2011 |
| Ashcronio Limited | Professional & scientific | 2016 |
| Ashlin Holdings Limited | Financial services | 2025 |
| Asia Powerboat Association Limited | Arts & recreation | 2022 |
| ASQ Distributors Limited | Hospitality | 2019 |
| Assured & Legal Wills Trusts and Estate Planning Ltd | Other services | 2013 |
| ASW Defence Services Limited | Public administration | 2021 |
| ASW Electrical (South West) Limited | Construction | 2014 |
| AT Home Anywhere Ltd | Professional & scientific | 2026 |
| Atlas Carpentry & Construction Limited | Construction | 2022 |
| Atlas IT Consulting Ltd | Information & communication | 2018 |
| Atmk Services Ltd | Administrative & support | 2019 |
| ATO Home Improvements Ltd | Construction | 2019 |
| ATS Accounting & Tax Solutions Ltd | Professional & scientific | 2019 |
| Atwood Builders Ltd | Construction | 2024 |
| Autoworx Garage Ltd | Wholesale & retail | 2022 |
| AUXILIUM8 Ltd | Administrative & support | 2024 |
| Avebury Court (Exmouth) Limited | Households | 2011 |
| Avenue Properties South West Limited | Real estate | 2026 |
| Aviation Skills Management Ltd | Education | 2025 |
| Avid Trader Ltd | Wholesale & retail | 2019 |
| Avocet Land Holdings Ltd | Construction | 2026 |
| Avocet Solutions Ltd | Professional & scientific | 2021 |
| Avocet Wealth Partnership Ltd | Financial services | 2020 |
| AW Electrical East Devon Ltd | Construction | 2020 |
| Awav Events Limited | Information & communication | 2015 |
| Awliscombe Developments (SW) Limited | Construction | 2022 |
| Aylesbeare Food Forest Ltd | Manufacturing | 2012 |
| Azuri Studios Limited | Other services | 2017 |
| AZW Holdings Limited | Financial services | 2022 |
| B & a Investment Portfolio Limited | Real estate | 2023 |
| B & C New Cross SE14 Ltd | Administrative & support | 2016 |
| B.J. Toye Limited | Health & social care | 2015 |
| Badger Estates Ltd | Real estate | 2019 |
| Baileys (Exmouth) Limited | Real estate | 1960 |
| Baines Accountants Limited | Professional & scientific | 2024 |
| Bakkes Freehold Ltd | Real estate | 2024 |
| Bakkes Properties Limited | Real estate | 2022 |
| Balfour Court Sidmouth Management Company Limited | Households | 1979 |
| Baltic Properties Exeter Limited | Real estate | 2015 |
| Bar 1912 Ltd | Hospitality | 2019 |
| Bar Buoy Ltd | Manufacturing | 2021 |
| Bar Forty Limited | Hospitality | 2024 |
| Bare West Events Limited | Arts & recreation | 2020 |
| Barnes Holdings (SW) Limited | Hospitality | 2019 |
| Barton Lodge Freehold Management Ltd | Households | 2017 |
| Barton Lodge Residents Association Limited | Households | 2016 |
| Bayles & Fereday Limited | Construction | 2008 |
| Bazeleys Holdings Limited | Administrative & support | 2024 |
| Bazeleys Limited | Administrative & support | 2003 |
| Beach Bar & Restaurant Ltd | Hospitality | 2024 |
| Beachside Investments Ltd | Real estate | 2025 |
| Bear Electrical Solutions Ltd | Construction | 2024 |
| Beasley & Beasley Ltd | Construction | 2018 |
| Beautybyeloise Ltd | Other services | 2025 |
| Become Even Better Consulting Limited | Professional & scientific | 2014 |
| Bee@One Coaching Ltd | Other services | 2020 |
| Beechcombe Limited | Financial services | 2026 |
| BEN Lane Badminton Ltd | Arts & recreation | 2021 |
| Benanna Properties Limited | Real estate | 2025 |
| Bencoro Ltd | Wholesale & retail | 2025 |
| Berjayjunds Holdings Ltd | Financial services | 2021 |
| Berjayjunds Ltd | Real estate | 2021 |
| Berry Court Management Limited | Real estate | 2007 |
| Bertopack Services Limited | Manufacturing | 1974 |